Bolt mechanism for doors.



) c. A. BERRY. BOLT MECHANISM FOR DOORS.

APPLICATION FILED DEC. 26, 1912.

Patented Feb. 3, 1914.

3 SHEETS-SHEET 1.

TOR

A. a. M.

C. A. BERRY.

BOLT MECHANISM FOR DOORS.

APPLICATION FILED DEC. 26. 1912,

1 ,086, 1 25- Patented Feb. 3, 1914.

Q 3 SHEBTS-SHEET 2.

i l W/TNESSLIS I INVENTOR C'. A. BERRY.

BOLT MECHANISM FOR DOORS.

APPLIGATIONIILED DEO.26, 1912.

1,086, 1 25. Patented Feb. 3, 1914.

3 SHEETS-SHEET 3- UNITED s'rA rns PATENT OFFICE.

cannons A. nanny, on sa'amronn,

MAiN'UIACTU'BIIIG COMPANY,

Zo allwhomit may concern A Beitlmown thatl, CHARLES A. BERRY, of. Stamford, in the county of Fairfield and State-oLConnecticut, have invented certain new. and useful Improvements in Bolt Mechanism for Doors; and I do hereby declare the following to be a full, clear, and exact description of'the invention, such as Willi-enable others skilled in the art to which it a pertains to make anduse the. same. lVFy inventionrelates to an improvement in bolt mechanism for doors and particularly for hollow metal doors.

' the. use of. hollow metal doors. it has been found that when a fireoccurs in a roomithe. heat causes the door "to warp away from the, jambsufiicient toal low the [lame to pass through into the. next room, and the cbj'ect'of this improvement'is to {so secure the door by means of safety bolts, in addition to the usual spring latch, that'theidoor will be held in position and prevented from 1 I .I z

,'With this object in view my invention consists in aseries of 'auxiliary'or safety bolts connected withthe latch bolt actuating mechanism so as to be retracted thereby, andautomatically'. operated means for holdins; the auxiliary or. safety latch bolts normally retracted.

My, invention .further consists in the parts and ,combination oflparts and in the details of construction-as will be more fully described and pointed out in the claims.

, In the accompanying drawings, Figure 1, is a view in longitudinal section of a door stile. with my improvements attached there-. to; Fig. 2'is a view in transverse section on the line- A-A of Fig. 1. Figs. 3 and 4 are views in sectionshowin the trip for holdin the secondary bolts 1n retracted position an [for releasing them as the door assumes its closing position. Figs. 5-and 6 are views in elevation. and ,section respectively of the lock mechanism, and Figs. r 7 and 8 are simi lar views of a .moditicatiog; of the lock mechanism. 1,3"

I The door. is preferably hollow, and mounted in the, stile 1 thereof, are 'a' series of bell crank levers 2. These .levers 2 areeach pivotallyi'mountedon, a bracket 3 secured, to

the inner face of the outer edge of the stile,

and each is pivotally connected at;itsupper endfasgat, 4, team auxiliarvbolt Inthe present instance, I have shown three auxconnnc'mcu'r. assionon mama YALE-e. Town! or smear-om), coammxdu'r.

sour mnmlsmromnoona.

iliary bolts, but. the number used-is unim portant. The lowen' end. each bell crank lever. 2 1s pivotally, conneetedtothe lifting, hurt, so that: when the latter. is. moved verturned in a direction.tmretract-theauxil; ary bpltso, and when the bar 6 is released, its weight. willshifhor operate the entire se-' ries of bell, cranks in ;a. direction 'to' project. the bolts 5.. The lifting bar (ipreferably ex-.' tends from a point.just-,b.elowjthe. top bolt, to a point just, below. the-lower bolt. 'Ilhe. bolts-5 pass. through holes. in the outer edge of the. stile, and, When retracted rest flush, Wlth' or slightly within the outer wall of the...

stile so .asto

- 7 is theimmn latch boltnormally projected by the springv 8, and having a slotin its rear endthrougli which a pinon the-vertical arm ofith'e-bell 'cran'k lever 9 rests, the slot. in the. shanloof the bolt permitting the bolt to'be forcediinwfirdly without moving said. lever, and without actuatingthe lifting rod. This lever 9 is pivoted to the'stile, and is connected at 10'to thetail piece" 11,whieh latter rests on the rollbacks 12-"and-12 of the lock. The free end of the horizontal r arm of the .bell' crank lever 9 rests under the pin 13 ca rried by bracket 14 secured to the liftingbar 6. 'From the foregoing it will be seen that ife-itlier. roll back be. turned by a knob, the ta i l piece 11 will be lifted, and the latter, by its; engagement with bell cranlz'l) turns the latte-min a direction to retractlatch l1, and by its engagement with the pin 13 on bracket 14, elevates the lifting bar, which, through its connections with the several bell crank levers 2, retracts the entire series of auxiliary bolts. As soonas the knobflis. released the weight of the lifting barfi, together with the pressure of the spring 8 operates to'project the latch 7 and the entire series of auxillary bolts. Y

One of the main features of my'invention' is the provision of means for normally holding the auxiliary bolts retracted,'sothat the latter are never projected except under abnormal conditions. One ,form of mechanism is shown in Fig. 1, and comprises a'latclnng lever 15 pivoted at 16, and provided at the free end of one of its arms with a'shoulder 17 adapted to engage the free end 18 of the uppermost bell crank 2. i The other and shorter arm of the lever 15, is provided at natpnmaineb. 311914.

tically, all the, bell, crank levers=2 will. be,

ermit the, door. to fully close.

its free end with the side enlargements 19 which latter are enga ed by the tri ping levers 20. The hub 0 one of these fevers 20 is mounted in the outer face of the door, and the other is mounted in the inner face, and each is provided with a spring 21 which normally tends to force the tripplng levers in a direction to move the latching lever 15, out of contact with' the upper end 18 of hell crank lever 2, andthns release the lifting bar 6, which, as'soou as released, projects all the auxiliary bolts. Secured to the outer end of the hub of each lever 20, is an arm 20, to the free end of which a sheet metal link ispivoted, and pivotally mounted on tuds 23 secured respectively to the innerand outer faces of the doors are the metal-lifilrs 24. In assembling the parts the levers 20 are turned to put their springs 21 under tension, after which 'the links 22 and 24 at each side of the door are secured together by a solder-which melts at a low heat. From this it will be seen that under normal condition both tripping levers 20 will be held out of contact with latching ,lever 15, thus permitting the latter to dog the end 18 of the upper bell crank lever 2 and-thus hold the lifting bar elevated and all of the auxiliaq bolts retracted. If however, an abnormal heat should develop at either side of the door, the solder connecting the links 22 and 24 on the side subjected to the heat, would melt thus disconnecting -the links and leaving the lever 20 thus re- 86 leased, free to turn under the action of its spring 21, and engaging its extension 19 of latching lever 15, throw the latter toa posif-g tion to release the end "18 of hell cranli lever 2 and permit the lifting bar to drop by its own weight and project all'--'the auxiliary bolts. v

With the construction thus far described, the liftin'g'bar is'held in its elevated position, and the, auxiliary bolts held retracted, by the fusible connection between the links,

7 The fusible connection between the links may however, melt while the dooiis in openposition, or it may be necessary in the event a fire should start with the door closed, to get into the room where the fire started for the recovery of something therein, and then close the door to prevent the fire from spreading. and under such conditions it ,is essential that means he providedfor holding the auxiliary bolts retracted while the door is open, and for releasing them automatirally upon closing the door, so as to lock the so me against warping. Such means are shown in Figs. 1, 3 and 4, and consists of an L-shnped trip lever 29 pivoted tothe inner wall of the frontedge of the door, its lower free edge projecting through ini opening in one faccof the door.'in a position to engage the doorjambSO when the door is closed. This lever 29nor1nallv projectsby 'ter, together with the lifting bar towhich "the stop is secured, elevated. This stop 31 knob is released, the lifting bar descends ries ai lock actuated by akeyl-134 coupled b gravity, through the side face of the door,

and is provided adjacent its-lower end with a lug 29*, adapted to engage the undersideof the lifting bar stop 31, and hold the latis rigidly secured to the bar 6, "and when the latter is lifted by a knob, the stop31 will be in a plane above'the lug 29' on lever, 29. and remains there so lon as the latch bolt is held retracted by a nob. Asthe' door'is opened, the projecting end of the lever 29 leaves the limb lgilld is then to ruvitate outwar t' s carrymg' t e lug 29 under the stoi so that when thefgo until the stop 31' rests on the lug 29, as shown inFig. 3, thus holding all theauxiliary bolts retracted. As the door comes.- to'a close, the trip lever will be-forged inwardly by contact with the iv jarnb, thus carrying the lug 29' from under-,the stop, and freeing the latter, and permitting the lifting bar to drop by its own" weight. and f bro'ect the bolts. 1' v Y he main latch 7 is independentof thin auxiliary bolts, and is at all times,.and an; der all conditions, under the control, of the inside knob, and also ofthe qut'sid-flihoh except when it is set or locked byya'key' from the outside. if V The mechanism of the lock-isthown'in Figs. 5 and 6', 32 bein the iuIQide knob ends 33 the outside one. he outside knob gra N v the connectingbar 321 the kej? hub 6. The roll back 129,,which' is co, led to the outside 'kn'ob, is'provided 0gp.- its ower edge with a recess 37, in lw'hichithe lug 38 at the free end of one arm offthe bell crank lever 39 may be moved for locking and the free end of the other arm thereof is' nade V-shape to receive the finger 40 on the "key hub 36. By turning the key 34, theJkey-hub 36 is turned through'th'e connectlng bar 35, until the finger 40 en ages onehorn of the V-shaped end of the, ever 39,-findishifts the latter in a direction to car: the lug "38 upinto the recess 3! in;

roll' ick 12, thus locking the latter against movement. A rotation of the keyj i f m the 1 reversedirection, turns the key hub '36 .in a dlIQCtiOiltO throw lug 38ont of the recess 1 0 .37. thusi-eleasing roll back 12'. Lever. 39 is held i n; itstw'o positions by thespring 41.;

In order to prevent the' thinmetal of the door from collapsing under the tire-pf the through screws which clam" t con plates 43- to the door W spacing or reinforcing bloc portthe plates and take all the crnshinif strains of! the screws. -Wh'cn the lock is used on doors that swing 1 ,oao, 1 20 outwardly, the latch bolt shown in Figs 1 latch bolt, and I have illustrated one form of deadlocking means in Figs. 8 and 9. In

this construction a deadlocking bolt 45 is carried onthe main bolt 7, by the'pin 47 andi'scon-trolled by the spring 48, the bolt 45 being slotted for the passage of the pin,

" 47:- A-s-the door closes both the main and in its ret'racte plemental .venting the bolt 7 from secondary bolts will be carried into the door by reason of-their contact with the 'amb, but asthere is'no openin in the'jam for the-'deadlocki bolt,'the atter will be held d p'osition as shown in Fig. 7; The deadlocking'lever 50 is pivoted-to one side of the inain-- latch 'bolt 7, and when the door is closed, the inner end of deadlocking lever 50' stands in front of ost51, thus prebeing forced-in- 'wardly' by an pressureapplied tothe outer end of said i t; When the lock is oper 'ated by its linoirf'the extension 52 on the tail piece 1'1 elevates therear free end of the deadlo cking lever 50 to a plane above the post 51, thus leaving the latch bolt free to be retracted. When the door is open and the knob released, the d'eadlocking boltflfi will be carried to its projected position by spring 48, and the inclined surface of said bolt 45- coming in contact with the dverhanging lip 54 of the deadlocking lever 50, elevates therear end of the latter to a position above the post. 51, thus leavin the main latch bolt 7 free to be retracted by the closing of the door.

I make no claim in this application to a lifting bar connected with a series of bolts whereby the bolts will be simultaneously projected by the downward movement of the liftin bar, and combined with a fusible device f or normally holding the lifting bar in an inoperative position; nor to the combination of a seriesof connected olts adapted to be projected by gravity; for holding the bolts retracted under normal conditions and mechanical means for holding bolts retracted when the door is open; nor to the combination of a bolt adapted to be operated by a knob, a series of supplemental bolts connected with the knob mechanism so as to be actuated by the latter, fusible means for normally holding the supbolts retracted and mechanical means for holding the supplemental bolts retracted when the door is open and after they have been released by the fusible de vice, as the same forms the subject matter, of a divisional application No. 775,156 filed June 21, 1913. i I

It is evident that many slight changes be retracted with the latter, the secondarybolts may be held in inoperaible means i might be resorted to in therelative arrangement of partslshown anddescribed without departing from the spirit and scope of my invention. Hence I would have it understood that I donot wish to confine myself to the exact construction and arrangement of parts shown and described, but

Y Having fully described my invention what I claim as new and desire to secure by Lettors-Patent, is

I. In bolt mechanism for doors, the combi nation with a latch bolt and means for actuating same, of a series of-connected secondary bolts, means for holding them in inoperative position,

may be retracted with the latter, themain the secondary-bolts, so that the main latch 1 bolt may operate to latch the door when the secondary bolts are maintained ininoperative position. '2. In bolt mechanism for doors, the comtracting' same; of a series of connected secon'dary bolts, means for projectingthe latmeans for connecting m simultaneously, them'with the latch bolt whereby they may mea ns whereby tive position, and automatic means, operating when the secondary bolts are free to operate, for. holding the latter retracted while the door is open and forreleasing them as the doc.- assumes its closed position,

3.In bolt mechanism the combination with a secondary bolt, and automatically operating means, for holding the latter retracted while the *door' is open, of a main latch bolt, means for. retracting same, and

means for, connecting the secondary bolt.

with the operating mechanism of the main latch bolt, so that it will be operated simn1- taneously with the main latch bolt" when the door is closed, the ,main latch bolt however being free to move,independently ofthe secondary bolt whenthe latter is held in its retracted positions.

means for connecting them with the main latch bolt so that they bination with a latch bolt and means for re? 4. In bolt mechanism, the combination with a main latch bolt and means for actu-- ating same, of. a secondary bolt, means whereby the latter may be held in inoperative position, and means'whereby, when the secondary bolt is'released, it will engage the mechanism of the main latch bolt and be operated simultaneously with the latter, the

tuating same independently-of the connected bolts, and means whereby when the connect main bolt being free tooperate'independbolt when the'lat-tei I ed bolts are released they will be actuated by the main latch bolt mechanism.

6. In bolt mechanism for doors, the combination with a main latch bolt, and a series of secondary bolts, of a vertically'movable bar adapted to be lifted by the latch bolt actuating mechanism, means connecting said bar with the series of auxiliary bolts whereby the latter will be projected by the weight of the connecting bar when the latter is released, and means for holding said bar elevated when the door is open, and for releasing same as the door assumes its closed position, the said main latch bolt adapted to be actuated independently of the auxiliary bolts, when the verticalmovable bar is in its elevated position.

7. In bolt mechanism for doors, the com-.

bination with 'a main latch bolt and means for retracting same, of a vertically movable lifting bar, a series of secondary bolts, :1 bell crank connecting each secondary bolt with the lifting bar, and means connecting the main latch actuating mechanism and the lifting bar whereby the latter, when in its lowered position, will'be lifted, simultaneously with the retraction of the main bolt,

v the latter being free to operate independently of the secondary bolts, when the vertically movable bar is in its elevated position.

8. In bolt mechanism for doors, the combination with a main latch bolt, a spring for projecting same, and knob mechanism for retract-ingit, of a vertically movable lifting bar adapted to have movement independently of the main latch retracting mechanism and to be lifted by'the latter, a series of horizontally sliding secondary bolts, and a bell crank lever connecting each secondary bolt with the liftin bar, whereby all of the secondary bolts will be retracted simultaneously with the main latch.

-9. In bolt mechanism for doors, the combination with a lifting bar, a stop thereon, a series of bolts, means connecting the several bolts with the lifting bar whereby the bolts are actuated by the bar, and a spring actuated main latch bolt, of knob mechanism for retracting the main latch bolt and also for lifting the bar to retract the said series of bolts, and a gravity trip lever carried by the door and adapted to engage the door frame when the door is closed, the said trip lever engaging for holding elatter elevated when the the stop on the lifting bar" door is open,' the main latch bolt being ca able of movement independently of the ot er bolts. In testimony whereof, I have signed this specification in the presence of two'subscribing witnesses.

CHARLES A. BERRY lVitnesses:

Prrrna F. AUGONBRAUM, Evnnm'r W. LYON. 

